A valid country code value was not defined for each feature in the reference data. The country code value is essential when building a locator with reference data in multiple countries so that the country-specific addressing formats are honored to prevent incorrect assignment of country in geocode results.
If you defined a country code by selecting the <As defined in data> option for the Country or Region parameter and you mapped a field from your data to the Country Code locator role field in Field Mapping, the field in your data cannot be empty for any records in your dataset.
If all records in your data are in the same country and the country is available in the drop-down list for Country or Region, select the country for this parameter instead of selecting <As defined in data>. This will apply the correct country code to every record in your data.
If the records in your data are in more than one country, you must add the missing country codes to the records where this field is empty or missing.